Drinking cup



FIG. 1 is a top perspective view of a drinking cup showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side elevation thereof;

FIG. 4 is a side elevation thereof with the cup rotated 90 degrees counterclockwise from the position shown in FIG. 3;

FIG. 5 is a side elevation thereof with the cup rotated 180 degrees from the position shown in FIG. 3;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a drinking cup, as shown and described. 